forumdisplay & search results: need mod

[btappan]

I run a board where people post threads for business materials they are looking for. I need to have some clickable text link that shows up after the thread title in the forumdisplay and search resut pages. the link/button would need to only show if you were the starter of that thread and when you clicked it, it would simply add the word "FOUND" to the end of the thread title. cany anybody help me with this? it would be greatly appreciated.